Rep. Richard Nugent draws a Democratic challenger
David Koller, 43, is the third person and first Democrat to file to challenge Spring Hill Republican Rep. Rich Nugent, who is seeking a third term next year.
He said he has grown increasingly frustrated with the partisan gridlock in national politics.
"I tell my children that if you feel you can effect change for the better, then you have an obligation to do it," the married father of four said Wednesday. "This is a calling."